Improvement of Strength of Lotus-Type Porous Aluminum through ECAE Process

Abstract:

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Lotus-type porous aluminum with cylindrical pores oriented in one direction was deformed by Equal Channel Angular Extrusion (ECAE) through a 150° die with sequential 180° rotations, and the pore morphology and Vickers hardness after the extrusion were investigated. The Vickers hardness increases with increasing number of passes in the extrusions both parallel and perpendicular to the pore direction, accompanied by the decrease of porosity. The densification occurs more easily in the perpendicular extrusions than in the parallel extrusions, and the large deformation by the densification gives rise to the large increase in the Vickers hardness for the perpendicular extrusions.

Info:

Periodical:

Edited by:

Hyungsun Kim, Jian Feng Yang, Chuleol Hee Han, Somchai Thongtem and Soo Wohn Lee

Pages:

263-266

DOI:

10.4028/www.scientific.net/MSF.695.263

Citation:

T. B. Kim et al., "Improvement of Strength of Lotus-Type Porous Aluminum through ECAE Process", Materials Science Forum, Vol. 695, pp. 263-266, 2011

Online since:

July 2011

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Price:

$35.00

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